Sign support



FIG. 1 is a front-perspective view of a sign support according to the invention;

FIG. 2 is a rear elevational view of the sign support;

FIG. 3 is a front elevational view of the sign support;

FIG. 4 is a left side elevational view of the sign support of FIG. 1, the right side elevational view being a mirror image thereof; and,

FIG. 5 is a bottom plan view of the sign support, the top plan view being a mirror image thereof.

In the drawings, the broken lines illustrate the environment in which the sign support is used and forms no part of the claimed design. 

The ornamental design for a sign support, as shown and described. 